JP5849185B2 - Antenna socket - Google Patents

Description

  The present invention relates to an antenna socket to which an antenna plug is detachably connected, and more particularly to an antenna socket to which an antenna plug provided at one end of a coaxial cable for transmitting a television signal is detachably connected.

  Patent Document 1 discloses an antenna socket to which an antenna plug provided at one end of a television signal coaxial cable is detachably connected. The antenna plug includes a plug pin that is electrically connected to the inner conductor of the coaxial cable and a cylindrical plug shield that is electrically connected to the outer conductor of the coaxial cable and surrounds the plug pin. This antenna socket has a contact connected to the plug pin of the antenna plug and a cylindrical socket shield connected to the plug shield. The socket shield is fixed to a shield plate even disposed inside the antenna socket by two projecting pieces formed at the rear edge. A part of the circumference of the socket shield is formed with a slit extending over the entire length in the axial direction, and an elastic piece having some elastic deformability is formed on both sides of the slit. The elastic piece is elastically pressed against the outer periphery of the plug shield, so that the plug shield and the socket shield are electrically connected.

JP 2001-135430 A

  In the above antenna socket, since the socket shield is fixed to the shield plate by only two projecting pieces 180 degrees apart from each other provided at the rear edge, the fixing power of the socket shield tends to be weak, and the antenna plug is attached. There is a risk that it will be unable to withstand external forces that are sometimes applied. Further, since the slit is formed between the two projecting pieces, the portion between the slit and the projecting piece becomes an elastic piece having elastic deformability, but the slit is not included between the two projecting pieces. Since the part is also given some elastic deformability, due to the dimensional error between the plug shield and socket shield, the plug shield comes into contact with only one point of this part, and the elastic piece is plug shield It may happen that it does not touch. In this case, the reliable contact originally expected from the two elastic pieces cannot be obtained, and the electrical connection may become unstable.

  The present invention has been made in view of the above problems, and the object of the present invention is to ensure a reliable electrical connection between the plug shield and the socket shield even if there is a slight error between the plug shield and the socket shield. To provide a given antenna socket.

  In order to achieve this object, the present invention increases the coupling force of the socket shield to the shield plate, and at the same time restricts the elastic deformability of portions other than the pair of elastic pieces formed on the socket shield, so that only the elastic pieces are The invention has been invented based on the technical problem of intensively imparting elastic deformability.

An antenna socket according to the present invention is configured such that a plug pin and an antenna plug including a plug shield surrounding the plug pin are detachably connected, and has a configuration for realizing the above technical problem. This antenna socket includes an insulating base having an insulating socket having a central hole into which a plug pin is inserted, and a shield plate having a socket shield into which a plug shield is inserted. The center hole of the insulating socket is provided with a contact that is electrically connected to the plug pin. The shield plate is disposed on the front surface of the insulating base. The insulating socket is configured to protrude forward through an opening formed in the shield plate. The plug shield is coupled with a cylindrical socket shield that protrudes so as to surround the insulating socket and is electrically connected to the plug shield. The socket shield is formed with a slit extending over the entire length in the axial direction, and the first projecting piece, the third projecting piece, and the second projecting piece are formed in a circumferentially spaced manner at the rear end edge of the socket shield. . The rear edge is fixed to the shield plate by a first projecting piece, a second projecting piece, and a third projecting piece.

  The first projecting piece and the second projecting piece are located on both sides of the slit, and the portion of the socket shield that extends from the slit to the first projecting piece and the second projecting piece elastically contacts the outer periphery of the plug shield. Defined as an elastic piece. The third projecting piece is located on the opposite side of the slit as viewed from the first projecting piece or the second projecting piece, and the first projecting piece and the second projecting piece have a slit interposed therebetween along the circumference. It is spaced apart, and the distance is larger than the circumferential length (circumferential length) from the third projecting piece to the first projecting piece or the second projecting piece.

  That is, in the antenna socket of the present invention, the cylindrical socket shield is fixed to the shield plate by three projecting pieces spaced along the periphery, and the first projecting piece and the second projecting piece have a slit interposed therebetween. It is separated along the circumference, and the above technical problem is realized with the technical feature that the distance is larger than the circumference from the third projecting piece to the first projecting piece and the second projecting piece. The above-mentioned purpose has been achieved.

  According to a preferred aspect of the present invention, each of the elastic pieces is characterized in that the diameter from the center of the socket shield gradually becomes smaller as the distance from the first projecting piece or the second projecting piece increases. In this case, at the time of contact with the plug shield, a large amount of displacement is given to the pair of elastic pieces, and a more reliable electrical connection to the plug shield can be obtained by the elastic restoring force based on this displacement.

  In this connection, it is advantageous for the design of the socket shield to facilitate the elastic piece being curved along a part of the elliptical locus.

  In addition, it is effective in obtaining a stable electrical connection with the plug shield that the two elastic pieces have the same circumferential length.

  More preferably, the socket shield is configured such that the first projecting piece, the third projecting piece, and the second projecting piece are separated from each other by an angle of 90 degrees. As a result, the elastic deformability of the socket shield in the portion from the first projecting piece through the third projecting piece to the second projecting piece can be more reliably limited, and the electrical connection with the plug shield by the elastic piece is stabilized.

  The socket shield preferably has a constant diameter from the center of the socket shield in a portion from the first projecting piece to the second projecting piece through the third projecting piece. As a result, a portion matching the outer periphery of the circular plug shield is secured, and the connection with the plug shield is facilitated.

  Further, it is desirable that the socket shield is fixed to the shield plate by bending each protrusion on the shield plate through three slots provided in the shield plate. This facilitates coupling of the socket shield to the shield plate.

  A cylindrical socket shield is fixed to the shield plate by three projecting pieces spaced along the periphery, and the first projecting piece and the second projecting piece are spaced along the circumference with a slit therebetween, Even if there is some error between the plug shield and the socket shield, the distance is longer than the circumference from the 3rd projecting piece to the 1st projecting piece or the 2nd projecting piece. An antenna socket is provided in which a reliable electrical connection is provided.

The perspective view which looked at the antenna socket which concerns on one Embodiment of this invention from the front. The perspective view which looked at the antenna socket same as the above from the back side. Explanatory drawing which shows the coaxial cable used for the antenna socket same as the above. The disassembled perspective view which shows the principal part of an antenna socket same as the above. Schematic which shows the antenna plug connected to an antenna socket same as the above. The perspective view which shows the socket module which comprises the antenna socket same as the above. The perspective view which shows the socket shield used for the antenna socket same as the above. The rear view of a socket shield same as the above. Schematic which shows the change aspect from which the position of the protrusion in a socket shield same as the above differs. Schematic which shows the change aspect from which the position of the protrusion in a socket shield same as the above differs. Schematic which shows the change aspect from which the number of protrusions in a socket shield same as the above differs.

  An antenna socket 100 according to an embodiment of the present invention is configured to receive an antenna plug 20 including a plug pin 21 and a plug shield 22 surrounding the plug pin 21 as shown in FIG.

  As shown in FIGS. 1 and 2, the antenna socket 100 is used, for example, embedded in a wall surface, connected to the TV signal coaxial cable 10 wired indoors on the back side, and connected to the television on the front side. It is detachably coupled to the antenna plug 20 at one end of the cable.

  As shown in FIGS. 4 and 6, the antenna socket 100 includes a housing 30 having an insertion port 31 into which the antenna plug 20 is inserted, and a socket module 90.

  The socket module 90 includes a conductive metal shield frame 80 that covers the back surface of the housing 30, a conductive metal shield plate 50 that is electrically connected to the shield frame 80, and an insulating base that is held between the two. 60. The shield plate 50 is fixed to the shield frame 80 by fitting a claw 53 provided at the upper end into the hole 82 of the shield frame 80. A claw 83 is formed on the side piece of the shield frame 80 and the socket module 90 is fixed to the housing 30 by fitting the claw 83 into the hole 32 of the side piece of the housing 30.

  The insulating base 60 is formed of an electrically insulating material and includes an insulating socket 61 into which the front plug pin 21 is inserted. The insulating socket 61 protrudes forward through the opening 51 of the shield plate 50.

  The center hole 62 of the insulating socket 61 accommodates a pin receiver 71 formed at the front end of a contact 70 that is electrically connected to the inner conductor of the coaxial cable 10 connected to the back surface of the shield frame, and is electrically connected to the plug pin. Is done. A terminal 72 into which the inner conductor of the coaxial cable is inserted is formed at the rear end of the contact 70, and the terminal 72 is held in a terminal case 65 fixed to the shield frame 80. The terminal case 65 is formed of an electrically insulating material, and an insertion port that opens to the lower surface is formed in a portion that protrudes rearward through the opening 81 of the shield frame 80. The terminal is connected to the inner conductor of the coaxial cable inserted into the insertion port. 72 is electrically connected. The coaxial cable is fixed along the back surface of the shield frame 80 by a press fitting 85 fixed to the back surface of the shield frame 80 by screws 86, and the outer conductor of the coaxial cable is electrically connected to the shield frame 80.

  The shield plate 50 covers the front surface of the insulating base 60 and holds the cylindrical socket shield 40 surrounding the insulating socket 61 protruding forward of the insulating base. The socket shield 40 is separated from the insulating socket 61 by a predetermined distance, and the inner peripheral surface of the socket shield 40 contacts the outer periphery of the plug shield 22 of the antenna plug 20 to make electrical connection therebetween. The socket shield 40 is molded from the same kind of conductive metal as the shield plate 50 separately from the shield plate 50, and the projecting pieces 44, 45, 46 formed on the rear edge are folded back through the slots 52 formed in the shield plate 50, thereby It is caulked and fixed to the plate 50.

  As shown in FIGS. 7 and 8, the socket shield 40 is formed with slits 41 that run the entire length in the axial direction, and some elastic deformation ability is imparted to both sides of the slits 41. The projecting pieces formed on the rear edge of the socket shield 40 are a first projecting piece 44, a second projecting piece 45, and a third projecting piece 46 which are spaced apart along the circumferential direction. The pieces 45 are located on both sides of the slit 41, and in the socket shield 40, the portions from the slit 41 to the first projecting piece 44 and the second projecting piece 45 form a pair of arcs that elastically contact the outer periphery of the plug shield. An elastic piece 42 is defined. The third projecting piece 46 is located on the opposite side of the slit as viewed from the first projecting piece 44 and the second projecting piece 45, and reaches the second projecting piece 45 from the first projecting piece through the third projecting piece 46 in the socket shield 40. The portion is a fixed portion that does not substantially have elastic deformability.

  The third projecting piece 46 is spaced apart from the first projecting piece 44 and the second projecting piece 45 within an angle range of 90 degrees with respect to the center of the socket shield 40. The slit 41 is provided at a position 180 degrees away from the third protruding piece 46, and the circumferential length (circumferential length) of both elastic pieces is equal. The inner diameter of the socket shield is set to about 9.0 to 10.0 mm, the thickness is set to about 0.5 mm, and the width of the slit 41 is set to about 1.0 mm.

  A portion from the first projecting piece 44 through the third projecting piece 46 to the second projecting piece 45 has a constant diameter from the center of the socket shield 40.

  Each elastic piece 42 is curved along a part of the oval mark so that the diameter from the center of the socket shield 40 gradually decreases as the distance from the first projecting piece 44 or the second projecting piece 45 increases. The contact force to the outer periphery of the shield is increased. That is, when a perfect circular plug shield is inserted, a force that displaces the elastic piece 42 outward from the plug shield works, and the force that resists this displacement increases the contact force between the elastic piece 42 and the plug shield. It is done.

  A plurality of guide pieces extending obliquely outward are formed on the front end edge of the socket shield 40 to facilitate insertion of the plug shield into the socket shield 40. The guide pieces are separated along the circumferential direction, and the guide pieces on both sides of the slit 41 are set shorter than the peripheral lengths of the other guide pieces. The guide pieces extending to the elastic piece 42 side beyond points on the circumference corresponding to the first protruding piece 44 and the second protruding piece 45 are isolated from the guide pieces on both sides of the slit 41, and the elasticity of the elastic piece The deformability functions so as to be imparted more to the portions where the guide pieces on both sides of the slit 41 are present.

  In the above-described embodiment, an example in which the elastic piece is curved along a part of the elliptical locus is shown, but the present invention is not necessarily limited to this form, and the distance to the center of the socket shield is not limited. If it becomes smaller gradually as it approaches the slit, it may be curved along another locus.

  Further, in the present embodiment, an example in which the three projecting pieces in the socket shield are arranged 90 degrees apart from each other has been shown, but the present invention is not limited to this form, for example, as shown in FIG. They may be separated by an angle exceeding 90 degrees, or may be separated by an angle of less than 90 degrees as shown in FIG.

  Further, as shown in FIG. 11, it is possible to separate the four projecting pieces at equal intervals without an angular range of 180 degrees.

  The width of the slit can be changed as long as the pair of elastic pieces 42 does not lose the effect of being pressed against the inner periphery of the plug shield 22.

  Furthermore, in this embodiment, although the example which crimped and fixed each protrusion to the shield plate was shown, this invention is not limited to this form, For example, a protrusion can also be fixed by welding.

20 antenna plug 21 plug pin 22 plug shield 40 socket shield 41 slit 42 elastic piece 44 first protrusion 45 second protrusion 46 third protrusion 50 shield plate 51 opening 52 slot 60 insulation base 61 insulation socket 62 center hole 70 contact 100 Antenna socket

Claims (7)

Antenna plug with a plug shield surrounding the and plug pin plug pin are detachably connected,
A shield plate,
A socket shield provided on the shield plate and into which the plug shield is inserted;
An insulating base;
An insulating socket provided in the insulating base and having a central hole into which the plug pin is inserted ;
Wherein provided in the insulating socket, e Bei a contact that is electrically connected to the plug pins,
The shield plate is disposed in front of the insulating base;
The insulating socket protrudes on the front of the insulating base through an opening formed in the shield plate,
The socket shield is a cylindrical shape for electrical connection to the plug shield, and is an antenna socket having a slit over the entire axial length thereof ,
A first projecting piece, a third projecting piece, and a second projecting piece, which are provided at a rear end edge of the socket shield and sequentially spaced in the circumferential direction ;
Said first projecting piece and said second projecting piece, the third projecting piece is fixed to the shield plate,
The first projecting piece, the second protrusion is located on either side of the slit, the portion extending from the slit in the socket shield in the first projecting piece and said second projecting piece is elastically to the outer periphery of the plug shield Is defined as an elastic piece that touches automatically,
Before Symbol third protrusion is located on the opposite side of the slit as viewed from the first protrusion and the second protrusion, wherein the first protrusion second protrusion is a circle with intervening slit therebetween spaced along the circumference, its distance is shall Do greater than the circumferential length from the third projecting piece to said first projecting piece and said second projecting piece,
The antenna socket , wherein the rear edge is fixed to the shield plate by the first projecting piece, the second projecting piece, and the third projecting piece .   2. The antenna socket according to claim 1, wherein each of the elastic pieces gradually decreases in diameter from the center of the socket shield as the distance from the first projecting piece or the second projecting piece increases.   The antenna socket according to claim 2, wherein the elastic piece is curved along a part of an elliptical locus.   4. The antenna socket according to claim 1, wherein the two elastic pieces have the same peripheral length.   The antenna socket according to any one of claims 1 to 4, wherein the first projecting piece, the third projecting piece, and the second projecting piece are separated from each other by an angle of 90 degrees.   6. The socket shield according to claim 1, wherein a diameter from the center of the socket shield is constant in a portion from the first projecting piece through the third projecting piece to the second projecting piece. The described antenna socket.   Three slots are formed in the shield plate along the periphery of the opening, and the first, second, and third projecting pieces pass through the slots and are caulked on the shield plate. The antenna socket according to claim 1, wherein the socket shield is fixed to the shield plate.